Append values to a set in Python - Stack Overflow
Aug 2, 2010 · Converting to lists and back is a lot of unnecessary overhead and seems to defeat the purpose of sets. Consider the answer by @nyuszika7h as well as the solution in …
python - Best way to find the intersection of multiple sets? - Stack ...
From Python version 2.6 on you can use multiple arguments to set.intersection(), like
Are Python sets mutable? - Stack Overflow
Jan 7, 2013 · 14 Python sets are classified into two types. Mutable and immutable. A set created with 'set' is mutable while the one created with 'frozenset' is immutable.
Python Sets vs Lists - Stack Overflow
May 14, 2010 · In Python, which data structure is more efficient/speedy? Assuming that order is not important to me and I would be checking for duplicates anyway, is a Python set slower …
python - How do I add two sets? - Stack Overflow
Apr 15, 2015 · c = a | b Sets are unordered sequences of unique values. a | b, or a.union(b), is the union of the two sets — i.e., a new set with all values found in either set. This is a class of …
Why don't Python sets preserve insertion order? - Stack Overflow
Do the same efficiency improvements that led the Python team to change the dict implementation not apply to sets as well? I'm not looking for pointers to ordered-set implementations or ways …
What is the difference between sets and lists in Python?
Sep 10, 2012 · Is the only difference between sets and lists in Python the fact that you can use the union, intersect, difference, symmetric difference functions to compare two sets? Why …
python - What does the caret (^) operator do? - Stack Overflow
Side note, seeing as Python defines this as an xor operation and the method name has "xor" in it, I would consider it a poor design choice to make that method do something not related to xor …
python - Sorting a set of values - Stack Overflow
Jul 3, 2013 · That's because the whole point of a set, both in mathematics and in almost every programming language,* is that it's not ordered: the sets {1, 2} and {2, 1} are the same set. …
python - Set difference versus set subtraction - Stack Overflow
166 set.difference, set.union... can take any iterable as the second arg while both need to be sets to use -, there is no difference in the output.